If the Chelsea owners are very realistic with the clubs situation; then i would say that Pochettino burden at Chelsea is not heavy. Its a tough and doable task. Over 9 first team players are sold and replaced with very young talents which means its a rebuild under Pochettino
For me, i think it would be magic if Pochettino is able to get champions league football with that squad; they are all new, no chemistry, no depth; just too many new signings. Time will tell
What Chelsea has done this season is a pretty big overhaul they have done and I hope what they have done can be successful in next season. Many key players have been sold and it is an interesting event that is happening at Chelsea at the moment. Even the big teams are ready to buy the players sold by Chelsea. Pochettino will start next season with the addition of new players and their squad has completely changed from last season. So at least there is a reason for Chelsea's management in this decision because judging from the individual quality of the players being sold they are quite good and I hope they don't make blunders in this transfer window.
But for now we rarely hear news about Aubameyang, whether he will be retained by Chelsea or he will also be sold in this season's transfer window. I think he also failed to shine last season in Chelsea front line.